Slide operative fastener structure



. NOV. 17, 1936. I 'D, BERMAN 2,060,830

SLIDE OPERATIVE FASTENER STRUCTURE I Filed March 12, 1935 2 Sheets-Sheet 1 uffnunuuuuu WITNESS INVENTOR g MM fl/n w 5/; Bf/P/Vfl/V MWA ATTORN EYS VWZQWMM Nov. 17, 1936. 5|| BERMAN 2,060,830-

SLIDE OPEBATIVE FASTENER STRUCTURE Filed March 12, 1935 2 Sheets-Sheet 2 w um E s s I ENVENTQFJE paw/p S/LBfiWM/IN This invention relates to slide fasteners of the Patented Nov. 17, 1936 SLIDE OPERATIVE "FASTENER STRUCTURE David Silherman, New York, N. Y., assignor to 'Waldes Koh-I-Norr, Inc., Long Island City,

N. Y., a corporation of New York Application March 12, 1935, Serial No. 10,607 8 Claims. (c1. 2%205 enhance the beauty and desirability of the slide type in which two series of cooperating interlocking elements are adapted to be interlocked or disengaged by a manually operated slider movable lengthwise longitudinally of the series of elements.

Slide fasteners of the type in question general-.

ly comprise a pair of flexible stringers made of fabricgupon the opposed edges of which are secured the series or rows of interlocking elements. The interlocking elements which are usually made of metal, each have spaced fabric-engaging jaws at the root portions of the elements which are adapted to be clamped against the opposite sides of the stringer to permanently hold the elements upon the stringer. The looking portions of the elements which project outwardly from the opposed edge of each stringer, are provided with complementary surfaces adapted to interlock in interfingered relation with the locking portions of the elements on the other stringer and are swung into and out of such relation by the action of the slider. These conditions require the stringers to be made of a flexible material which is sufficiently strong to afford a reliable and relatively permanent anchoring medium for the elements. The stringers ally made in the form of tapes having a thickened edge portion'upon which the interlocking elements are anchored. These tapes which are usually made from cotton arestrong enough to support the elements in a satisfactory manner but possess certain disadvantages which it has become increasingly important to overcome in view of the increased use of slide fasteners in all classes of garments. In the firstplace, the usual type of stringer tapeis substantially heavier and stiffer than the fine flimsy material that is used in womens underwear and clothing. It is not as attractive as the fine fabrics used in such garments and does not take the same dyes as such fabrics sothat a perfect color match is not often obtainable. Furthermore, the tape ordinarily used in the stringers is much more expensive than ordinary cloth and. must be ordered in large quantities by the slide fastener manufacturer.

The purpose of the present invention is to provide a slide fastener construction of the indicated type which will overcome all the above mentioned and other difficulties and particularly to provide an inexpensive and satisfactory stringer for slidefasteners which will be light and extremely flexible and which will greatly fastener.

The invention is illustrated in. the accompanying drawings in which Fig. 1 is a perspective View of I a portion of the stringer before it is folded around the cord and stitched; Fig. 2 is a similar view'of the stringer after it has been folded around the cord and stitched; Fig. 3 is an enlarged detailed top view of a portion of the stringer with the interlocking elements attached but uncovered; Fig. 4 is a front end view of'the structure shown in Fig. 3; Fig. 5 is a view similar to Fig. 3 showing the covering portion ofthe stringer in position on the elements; Fig. 6 is a front end view of the structure shown in Fig. 5;

Fig. 7 is a top'view of a portion of the completed I slide fastener; Fig. 8 is a perspective view of a modified form of the stringer before it is folded around the cord and stitched; Fig. 9 is a similar view of the stringer shown in Fig. 8 after it has been folded around the cord and stitched; Fig.

10 is an enlarged detailed top view of a portion of the modified stringer with the interlocking elements attached; Fig. 11 is a front end view of the structure shown in Fig. 10'; Fig. 12 is a top view of a portion of the completed slide fastener and Fig. 13 is a sectional view of another. embodiment of the invention.

Referring more particularly to Figs. 1 to 7 of the drawings, the reference characters l and H designate generally the opposed stringers of the slide fastener. The stringers are formed of light fine goods such as are ordinarily used in women's clothes or undergarments and may be made of fine cotton cloths such'as sateen, muslin,' long cloth, nainsook, percale, fine linens, silks, rayon, etc. The selection of the particular type of fabric used is determined by the material of the garment with which the slide fastener is to be used and, the selected fabric may becolored or decorated to harmonize with the ma terial of such garment. As shown in Figs. 1 and 2 of the drawings, each of the stringers are composed of a long strip of the fine goods selected which has first been folded lengthwise so that one edge portion forms the folded or flap por tion l2 and then folded lengthwise so that the other edge portion forms the folded or flap portion l3 which overlies the flap portion it. The flap portion l2 and the central portion i i of the strip are substantially of equal width while the flap portion i3 is approximately threefifths as wide' as the flap portion l2. As is clearly shown in Fig. 1, a cord i is postioned longitudinally of such portions adjacent to the free edge of the flap portion l3 so that when the portions are folded as shown in Fig. 2, such edge portion of the flap I3 is folded around the cord in a thoroughly reliable and tenacious manner the interlocking elements. The presence at the thickened edge portion of five layers of the fine goods together with the folded edge portion of the flap I3 provides suflicient fabric material to insure a firm anchoragefor the elements. The interlocking elements which-comprise a root or anchoring portion l1 and an interlocking portion H! are anchored upon the thus thickened or strengthened edge of the stringer .by clamping the jaws of the root portions of the elements to such edge so that the interlocking portions l8 thereof project outwardly from such thickened edge as is shown in Figs. 3 and 4. By using interlocking elements having the root portions thereof provided with jaws for securely gripping the strengthened edge of the stringer, I have found that it is unnecessary to provide the line of stitching I6 for securing the cord IS in position with relation to the folded portions of the stringer thereby making the stringer more flexible and maintaining at a minimum the cost of its construction.

The supporting base of the stringer which is designated generally by the reference character l9 and which is composed of the flap portions I2 and I3 and the central portion H of the strip of material, is adapted to be sewn or otherwise secured to the edge of an opening in a garment.

The folded portion of the stringer which is designated generally by the reference character 20 and which is composed of the flap portion l2 and the central portion ll of the strip of material, is folded back over the upper jaws of the root portions 11 of .the interlocking elements so that they free or outer edge thereof extends over the upper sides of theelements thereby enclosing or covering the root portions of the latter. The width of the folded portion 20 of the stringer is such that it extends out over the upper sides of the interlocking elements a suflicient amount so that when the row of elemens is in interlocked position with the row of interlocking elements on the opposed stringer, the free edge thereof abuts the corresponding edge of the opposed stringer to cover or conceal the rows of interlocking elements. The folded portion 20 of the stringer is securely fastened to the upper sides of the elements and to the supporting base I9 of the stringer by means of a line of stitches which may comprise the looped stitches 22 which penetrate the supporting base l9 and the folded portion 20 of the stringer intermediate the interlocking elements on the stringer and stitches 23 intermediate the looped stitches 22 which penetrate the layers of the supporting having a pull member 25 which is to be grasped for manually moving the slider 24 longitudinally of the rows of elements.

As the stringers are composed of light fine goods, the slide fastener is light in weight and is extremely flexible, thereby making it particularly adapted for use on women's undergar ments or other articles when the fiimsiest of materials are used. The appearance of the new 'structure is attractive and pleasing and the fabric of the stringers can be perfectly matched with the goods of which the garment on which it is to be used is made as the fabric used in the stringer takesthe same dyes as the garment material and may even be made from the same piece of goods as the garment. The cost of making a slide fastener according to my invention is less than one-half the cost of the usual slide fastener using the customary cotton tape so that relatively inexpensive garments may now be furnished with a slide fastener structure. &

In case it is desired to provide an uncovered neat and strong slide fastener, the stringers may be arranged in the manner illustrated in Figs. 8 to 11. In that case the strips of fine goods of which the stringers 21 and 29 of the uncovered slide fastener are constituted, are first folded lengthwise so that so that when the central portion 3| of the strip I is folded around the cord 32, the free edge portion of the flap 29 encircles the cord 32 almost completely, as is clearly shown in Fig. 11. A line of stitching 33 may secure the cord 32 in position with relation to the flap 29 and the folded central portion 3|. There is thus provided at the resulting thickened edge three layers of the fine goods together with the folded edge portion of the flap 29 which provides sufflcient fabric material to insure a firm anchorage for the clamping jaws 34 of the elements 35. In this construction the supporting base of the stringer is composed of two sections between which the fabric of the garment is to be secured; the upper section being composed of the flap and a part of the central portion 9|, and the lower section being composed of the flap 29 and a part of the central portion 3|, as 'shown in Fig. 11. A line of stitching 36 which extends longitudinally of the stringer and which is positioned in back of the anchoring portions of the interlocking elements, penetrates the three layers of fabric at this point thereby preventing puckering of the fabric layers after the stringers are secured to the garment.

Fig. 13 illustrates a modified form of a covered slide fastener in which the fabric is first ar- 7 ment in position between the fold forming said ranged in a manner similar to that shown in Fig. 8 except that the right end portion of the strip, as viewed in Fig. 8, is folded to form a flap portion 37 which is wider than the flap portion 30 of the stringer illustrated in Fig. 8. Thus when the central portion 3! is foldedaround the cord 32, a covering flap consisting of the flap portion 31 and that part of the central portion 3| which the former overlies is provided which is shorter in width than the supporting section which comprises the flap 29 and the remaining part of the central portion 3i. As is shown in Fig. 13, the covering flap is folded around the anchoring portions of the interlocking elements, thereby covering such elements. The covering flap is secured to the upper sides of the interlocking elements by means of a line of stitches which may comprise the looped stitches 22,

stitches 23, and a bobbin thread as hereinbefore described.

It will be understood that various other modifications may be resorted to within the spirit of the invention without departing from the scope of the claims.

I claim:

1. A fastener structure of the slide operated type comprising a pair of stringers, each of said stringers being composed of a strip of thin fine goods folded along its length so that the edge portions thereof form flaps which overlap the central portion of the strip, said central portion and at least one of said flaps being folded along their lengths to form a folded edge, a strengthening element extending longitudinally of said stringer and positioned intermediate the folded parts of said central portion and adjacent to said folded edge, and a row of interlocking elements having attaching portions for securing them to the folded edge of said stringer, the attaching portions thereof being in the form of jaws clinched around said folded edge and said strengthening element.

2. A fastener structure of the slide operated type comprising a pair of stringers, each of said stringers being composed of a strip of thin fine goods folded along its length so that the edge portions thereof form flaps which overlap the.

edge, a strengthening element extending longitudinally of said stringer and positioned in between the fold formed on the free end portion of said flap, and a row of interlocking elements having attaching portions for securing them to the folded edge of said stringer, the attaching portions thereof being in the form of jaws clinched around said folded edge and said strengthening element.

3. A fastener structure of the slide operated type comprising a pair of stringers, each of said stringers being composed of a strip of thin fine goods folded along its length so that the edge portions thereof form flaps which overlap the central portion of the strip, at least one of said flaps being at least as wide as the width of the stringer in its finished form, said central portion of the strip being folded along its length about the free-edge of one of said flaps to form a folded edge having at least three layers of the line goods, a strengthening element extending longitudinally of said stringer and positioned in between the fold forming said folded edge, a line of stitchingiextending longitudinally of said stringer and securing said strengthening elefolded edge, and a row of interlocking elements having attaching portions for securing them to the folded edge of said stringer, the attaching portions thereof lxaing in the form of jaws clinched around said folded edge and said strengthening element.

4. A fastener structure of the slide operated type comprising a pair of stringers, each of said stringers being composed of a strip of thin fine goods folded along its length so that the edge portions thereof form flaps which overlie the central portion of the strip, at least one of said flaps being at least as wide as the width of the stringer in its finished form, said central portion being folded along its length about the free edge of one of said flaps to form at least three layers having a width equal to the width of the stringer in its finished form, a strength ening element extending longitudinally of'said stringer and positioned in said last-mentioned foldupon the edge portion of the flap about which said fold was made and adjacent to the folded edge formed by such fold, a. row of interlocking elements having attaching portions for securing them to said folded edge, the attaching portions thereof being in the form of jaws clinched around said folded edge and said strengthening element and a line of stitching extending longitudinally of said stringer and positioned intermediate the row' of interlocking elements and the edge portion of the stringer which is to be secured to the edge of an opening in an article, said line of stitches penetrating all the layers of the stringer and securing them together.

5. A fastener structure of the slide operatedflaps of unequal width, the folded edge formed by said flaps having at least three layers of the fine goods, a strengthening element extending longitudinally of said stringer and positioned in between the fold formed by said flaps and adjacent the folded edge thereof, a row of interlocking elements having attaching portions for securing them to the folded edge of said stringer, the attaching portions thereof being in the form of jaws clinched around said folded edge and said strengthening element, one of said flaps being adapted for attachment to the edge of an opening in an article, and the other of said flaps being reversely folded over the at-- taching portions of said elements so as to extend toward the interlocking portions thereof, and stitches securing said reversely folded portion of the second mentioned flap to the covered sides of the interlocking elements.

, 6. A fastener structure of the slide operated type comprising a pair of stringers, each of said stringers being composed of a strip of thin fine goods folded along its length so that the edge portions thereof overlap the central portion of the strip, said folded strip being again folded on itself along a line extending lengthwise of the stringer and adjacent to the free edge of one of the folded portions so that the free edge portion of said folded portion is folded on it- I self and a pair of flaps of unequal width are formed, the folded edge formed by said flaps having at least three layers of the fine goods,

of said stringer and positioned in between the fold formed on thefree end portion of said folded portion, a rowof interlocking elements having attaching portions for securing them to v flaps being reversely folded over the attaching portions of said elementsso as to extend toward the interlocking portions thereof, and stitches securing said reversely folded portion of the second mentioned fiap to the covered sides of the interlocking element. r

"I. A fastener structure of the slide operated type comprising a pair of stringers, each of said stringers being composed of a strip of fine goods folded on itself to form at least two layers of the fine goods having a widthv at least as wide as the width of the stringer in its finished form, said folded strip being again folded on itself to form a folded edge having at least three layers of the fine goods, a strengthening element extending longitudinally of said stringer and positioned in between the two first-mentioned layers and the fiap formed by said lastmentioned fold and adjacent to the folded edge formed by such fold, and a row of interlocking elements having attaching portions for securing them to the folded edgeof said stringer, the attaching portions thereof being. in the form of jaws clinched around said folded edge and said strengthening element.

8. A fastener structure of the side operated type comprising a pair of stringers, each of said the fold forming, said folded edge in unattached relation thereto, and a row of interlocking elements having attaching portions for securing them to the folded edge of said stringer, the attaching portions thereof being in the form of Jaws clinched around said folded edge and said strengthening element and securely holding the same together, one of said flaps being adapted for attachment to the edge of an opening in an article, and the other of said flaps being reversely folded over the attaching portions of said elements so as to extend toward the interlocking portions thereof, and stitches securing said reversely folded portion of the second-mentioned flap to the covered sides of the interlocking elements.

DAVID SILBERMAN. 

